Asthma is defined as reversible airflow obstruction caused by bronchos
pasm and airway inflammation. When an acute exacerbation occurs, the p
atient's symptoms worsen significantly to warrant a visit to the emerg
ency department, and occasionally hospitalization is needed to control
symptoms. Status asthmaticus is defined as a severe episode of asthma
unrelieved by usually effective bronchodilators drugs. Potentially fa
tal asthma (PFA) is ascribed to those patients listed in Table 1.(22)
Malignant PFA delineates a subset of patients with PFA, whose noncompl
iance with management makes their disease virtually impossible to cont
rol.(11) Sudden asphyxic asthma refers to those patients that develop
a sudden dramatic deterioration leading to respiratory failure over a
few hours. Potentially avoidable factors are identified in up to 82% o
f all deaths from asthma that were evaluated in a study by the British
Thoracic Association in 1979.(5)